TI-2023-15612 Aliases CVE-2023-32318

User session not correctly destroyed on logout

LOW 33CWE-613Published 2023-05-26 · Updated 2025-01-14

Key facts

Attack vector: Local
Privileges required: Low
User interaction: Required
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-613.

Summary

Nextcloud server provides a home for data. A regression in the session handling between Nextcloud Server and the Nextcloud Text app prevented a correct destruction of the session on logout if cookies were not cleared manually. After successfully authenticating with any other account the previous session would be continued and the attacker would be authenticated as the previously logged in user. It is recommended that the Nextcloud Server is upgraded to 25.0.6 or 26.0.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00209 11th percentileScored 2026-11-07

Fix Fixed security-advisories (nextcloud): 25.0.6, 26.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nextcloud	security-advisories	25.0.2 to before 25.0.6; 26.0.0 to before 26.0.1	25.0.6, 26.0.1	Patch available	CNA

security-advisories Vendornextcloud Affected 25.0.2 to before 25.0.6; 26.0.0 to before 26.0.1 Fixed in 25.0.6, 26.0.1 Patch available CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:a:nextcloud:nextcloud_server:::::-:::*	25.0.2 to before 25.0.6	Vulnerable	nextcloud
cpe:2.3:a:nextcloud:nextcloud_server:::::enterprise:::*	25.0.2 to before 25.0.6	Vulnerable	nextcloud
cpe:2.3:a:nextcloud:nextcloud_server:26.0.0::::-:::	26.0.0	Vulnerable	nextcloud
cpe:2.3:a:nextcloud:nextcloud_server:26.0.0::::enterprise:::	26.0.0	Vulnerable	nextcloud

cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* Versions 25.0.2 to before 25.0.6 Vulnerable ·nextcloud
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* Versions 25.0.2 to before 25.0.6 Vulnerable ·nextcloud
cpe:2.3:a:nextcloud:nextcloud_server:26.0.0:*:*:*:-:*:*:* Versions 26.0.0 Vulnerable ·nextcloud
cpe:2.3:a:nextcloud:nextcloud_server:26.0.0:*:*:*:enterprise:*:*:* Versions 26.0.0 Vulnerable ·nextcloud

Remediation

Fix · CNA security-advisories (nextcloud) Fixed in 25.0.6, 26.0.1

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2023-32318

References

Patch 1

https://github.com/nextcloud/text/pull/3946

Advisory 1

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q8c4-chpj-6v38

TI-2023-20855 Users can delete external storage mount points CVSS 3.1HIGH 7.7
TI-2023-11091 Nextcloud download permissions can be changed by resharer CVSS 3.1HIGH 7.5
TI-2023-10624 Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs CVSS 3.1MEDIUM 5.3
TI-2025-37238 Cross-site scripting in Nextcloud CVSS 3.1MEDIUM 6.4
TI-2023-11086 nextcloud vulnerable to Uncontrolled Resource Consumption CVSS 3.1MEDIUM 6.5
TI-2022-18738 Exception logging in Sharepoint app reveals clear-text connection details CVSS 3.1MEDIUM 6.5

See all 188 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences